[Smart Sensor - This automatic trash can uses advanced automatic infrared sensing technology when your hand is placed above the sensing area the garbage can opens automatically and the lid closes automatically after 5s. Customers need to install 2 AA batteries as well as follow the steps to put on the garbage bag to ensure the bin works properly. Slim Design for Narrow Space- This 2.5-gallon sensor trash bin features a space-saving unique slim barrel design that is both minimalist and aesthetically pleasing and fits anywhere space is limited. (10.2L x 5.9W x 12.2H inch) Upgraded Trash Bag Fixed Ring - The upgraded garbage bag retaining ring is placed directly on the mouth of the bucket instead of inside the bucket no longer slipping off inside the bucket which can effectively hold the garbage bag and hide it perfectly. "IPX5 Waterproof - This smart trash can features advanced ipx5 waterproof technology so even when placed in a wet environment such as a bathroom the electronics wont get damaged and affect the normal operation of the trash can." Stay Open Mode - This slim garbage bin has a user-friendly stay-open mode just press the button on the right side of the sensor area to keep it open for a long time making it easy to throw away more than a handful of garbage.]